Growth, Optical and Dielectric Studies on Pure and L-Lysine Doped KDP Crystals

N Kanagathara,G Anbalagan

doi:10.1155/2012/826763

Abstract

Optically good quality single crystals of pure and L-lysine monohydrochloride-doped KDP crystals have been grown by a slow evaporation method. The grown crystals have been subjected to optical and dielectric studies. The UV-Vis spectrum shows the transmitting ability of the crystals in the entire visible region and transmittance percentage is increased for the doped KDP crystals. From the dielectric study, it is found that the dielectric constant and the dielectric loss of L-lysine-doped KDP crystals were lower than the pure KDP crystals. Hence L-lysine-doped KDP crystals are found to be more beneficial from an application point of view as compared to pure KDP crystals.

Highlights

IntroductionMaterials with large optical nonlinearity are needed to realize applications in optoelectronics, telecommunication industries, laser technology, and optical storage devices
Materials with large optical nonlinearity are needed to realize applications in optoelectronics, telecommunication industries, laser technology, and optical storage devices.ADP and KDP are two of the oldest crystals grown in large size for many applications and continue to be interesting materials both academically and industrially
We have shown the variation of current with temperature for 1 KHz is shown in Figure 8, and it is found that current increases with temperature, and a critical temperature is reached above which pyroelectric current begins to decrease

Summary

Introduction

Materials with large optical nonlinearity are needed to realize applications in optoelectronics, telecommunication industries, laser technology, and optical storage devices. ADP and KDP are two of the oldest crystals grown in large size for many applications and continue to be interesting materials both academically and industrially. Potassium dihydrogen phosphate (KDP) is an excellent inorganic nonlinear optical (NLO) material and has a considerable interest amongst several research workers because of its wide frequency, high efficiency of frequency conversion, and high damage threshold against high power laser. Most of amino acids possess NLO property; it is of interest to dope them in KDP crystals. The effects of amino acid on the NLO efficiency of KDP crystals were already published [1,2,3]. L-Lysine monohydrochloride dihydrate is a potential material to produce semiorganic crystals for nonlinear optical applications [3]. L-Lysine monohydrochloride amino-acid-doped KDP crystals were grown by slow aqueous solvent evaporation technique. The optical and dielectric behavior of the both pure and lysinedoped KDP crystals has been studied and discussed in detail

Experimental Procedure

Characterization

Results and Discussion

Conclusion